1 files changed, 12 insertions, 5 deletions
diff --git a/tris/lines.go b/tris/lines.go
index 7c7026b..37ec35c 100644
--- a/tris/lines.go
+++ b/tris/lines.go
@@ -2,14 +2,21 @@ package tris
 
 // Lines counts the number of lines that is completed and returns a Field with them removed
 func (f Field) Lines() (int, Field) {
-	full := [10]bool{true, true, true, true, true, true, true, true, true, true}
-	empty := [10]bool{false, false, false, false, false, false, false, false, false, false}
 	var n int
-	var nf [][10]bool
+	var nf [][]int
+
+	full := func(line []int) bool {
+		for _, el := range line {
+			if el == 0 {
+				return false
+			}
+		}
+		return true
+	}
 
 	// count and collect
 	for _, line := range f {
-		if line == full {
+		if full(line) {
 			n++
 		} else {
 			nf = append(nf, line)
@@ -19,7 +26,7 @@ func (f Field) Lines() (int, Field) {
 	// compress
 	for i := 0; i < 20; i++ {
 		if i < n {
-			f[i] = empty
+			f[i] = make([]int, len(f[0]))
 		} else {
 			f[i] = nf[i-n]
 		}